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Question 30861
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Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Conduction MCQ

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ConductionEasyQuestion 30861

Question

Fourier's law of heat conduction states that heat current is proportional to:
  1. A
    Temperature only
  2. B
    Temperature gradient (ΔT/L)
    Correct
  3. C
    Length of conductor
  4. D
    1/Area

Correct answer

Temperature gradient (ΔT/L)

Explanation

Q/t = kA(ΔT/L). Heat flow rate is proportional to the temperature gradient across the conductor.

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